Anise-Almond Biscotti

INGREDIENTS

• 1½ cups (7½ ounces) unblanched almonds
• 2½ cups all-purpose flour, plus more for dusting
• ½ cup yellow cornmeal
• 2 teaspoons baking powder
• ½ teaspoon salt
• 4 tablespoons unsalted butter, room temperature
• 1 cup granulated sugar
• 1 teaspoon pure anise extract
• 3 large eggs, plus 1 large egg, lightly beaten
• 1 tablespoon anise seeds
• Sanding sugar (or granulated sugar), for sprinkling (optional)